摘要
对任意形体的三维微粒 ,引入了等相位二维散射截面的概念 ,建立了半椭圆概率组合模型 ,提出了形体特征参数 η、影响因子T(η)与其形体概率分布函数Pη(η)的概念 ,以特征分布函数P(a ,η )取代了球形粒度概率分布函数Ps(a) ,在洛伦兹米 (Lorenz Mie)散射理论的基础上 ,建立了P(a ,η)的数学反演方程和实验测量方法。理论结果经非球形煤粉微粒的实验验证 ,效果较好。
A new half oblate consisted model is built upon the probability distribution concept from the scattering characteristics of the particles. It is suggested that η represents the shape factor, T(η) represents the shape impact factor and P(η) represents the shape probability distribution. The size distribution function P s (a) is substituted by the character distribution function P(a,η). \%After that, a inversion equation of the function P(η,a) and a method for the measurement are established upon the Mie scattering theory, which is supported by using arbitrary particles such as mineral particles in the experiment, and a good result is obtained.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2002年第3期363-368,共6页
Acta Optica Sinica
